The Incipio Atlas case is designed for Amazon Kindle and offers several layers of protection against water, dust and shock. The case is water-resistant up to a depth of about 6.5 feet for approximately 30 minutes. The Armor-X MX-U3X case supports a variety of tablets. This case features a large back window that accommodates different camera positions, and the cover enables touch control for full tablet operation. The Proporta BeachBuoy case is made from durable plastic and has a waterproof capability of up to about 16.5 feet for about an hour.